Refer to Figure 7.6a. Given the height of the retaining wall, H is 21 ft; the backfill is a saturated clay with φ = 08, c = 630 lb/ft2 γsat = 113 lb>ft3
a. Determine the Rankine active pressure distribution diagram behind the wall.
b. Determine the depth of the tensile crack, zc.
c. Estimate the Rankine active force per foot length of the wall before and after the occurrence of the tensile crack.
Figure 7.6a
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